<script>
    export default {
        name: 'CommonAside',
        data() {
            return {
                menuData: [
                    {
                        path: '/',
                        name: 'home',
                        label: '首页',
                        icon: 's-home',
                        url: 'Home/Home'
                    },
                    {
                        path: '/mall',
                        name: 'mall',
                        label: '商品管理',
                        icon: 'video-play',
                        url: 'MallManage/MallManage'
                    },
                    {
                        path: '/user',
                        name: 'user',
                        label: '用户管理',
                        icon: 'user',
                        url: 'UserManage/UserManage'
                    },
                    {
                        label: '其他',
                        icon: 'location',
                        children: [
                            {
                                path: '/page1',
                                name: 'page1',
                                label: '页面1',
                                icon: 'setting',
                                url: 'Other/PageOne'
                            },
                            {
                                path: '/page2',
                                name: 'page2',
                                label: '页面2',
                                icon: 'setting',
                                url: 'Other/PageTwo'
                            }
                        ]
                    }
                ]
            }
        },
        methods: {
            handleOpen(key, keyPath) {
                console.log(key, keyPath);
            },
            handleClose(key, keyPath) {
                console.log(key, keyPath);
            },
            // 点击菜单
            clickMenu(item) {
                // 当页面的路由与跳转的路由不一致才允许跳转
                if (this.$route.path !== item.path && !(this.$route.path === '/home' && item.path === '/')) {
                    this.$router.push(item.path);
                }
                this.$store.commit('selectMenu', item);
            }
        },
        computed: {
            // 没有子菜单
            noChildren() {
                return this.menuData.filter(item => !item.children);
            },
            // 有子菜单
            hasChildren() {
                return this.menuData.filter(item => item.children);
            },
            isCollapse() {
                return this.$store.state.tab.isCollapse;
            }
        },
    }
</script>

<template>
    <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"
             :collapse="isCollapse" background-color="#545c64" text-color="#ffffff" active-text-color="#ffd04b">
        <h3>{{ isCollapse ? '后台' : '通用后台管理系统' }}</h3>
        <el-menu-item @click="clickMenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
            <i :class="`el-icon-${item.icon}`"></i>
            <span slot="title">{{ item.label }}</span>
        </el-menu-item>
        <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
            <template slot="title">
                <i :class="`el-icon-${item.icon}`"></i>
                <span slot="title">{{ item.label }}</span>
            </template>
            <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
                <el-menu-item @click="clickMenu(subItem)" :index="subItem.path">{{ subItem.label }}</el-menu-item>
            </el-menu-item-group>
        </el-submenu>
    </el-menu>
</template>

<style scoped lang="less">
    .el-menu-vertical-demo:not(.el-menu--collapse) {
        width: 200px;
        min-height: 400px;
    }

    .el-menu {
        height: 100vh;
        border-right: none !important;

        h3 {
            color: #ffffff;
            text-align: center;
            line-height: 48px;
            font-size: 16px;
            font-weight: 400;
        }

        .sys-icon {
            width: 40px;
            height: 40px;
            margin: 20px auto;
            text-align: center;

            i {
                font-size: 35px;
                color: #ffffff;
            }
        }
    }
</style>